NPPES file of Aug 9, 2026

Nathaniel Joseph Retrum, PA-C

Medical Physician Assistant · Antigo, WI

Nathaniel Joseph Retrum, PA-C is a medical physician assistant with a practice address in Antigo, Wisconsin, and NPI 1336548627, issued on Aug 22, 2014. Check the license (Wisconsin 3377-23, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336548627
Name
Nathaniel Joseph Retrum
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
3377-23 WI
Self-reported in NPPES; status is on the state search
Practice location
110 E 5TH Ave, Antigo, WI 54409
Phone
(715) 623-2351
Enumerated
Aug 22, 2014
Record last updated
Aug 22, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20141210001918); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 110 E 5TH Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kathleen Bender, R.D.Registered Dietitian1033309315
  2. Jessica Brandt, DPTPhysical Therapist1548406416
  3. Angela Buchman, PAPhysician Assistant1114037363
  4. Noel Deep, MDInternal Medicine Physician1467470864
  5. Sylvia Dennison, MDPsychiatry Physician1700838836
  6. Kristine Flowers, MDFamily Medicine Physician1669405676

Verify Nathaniel Joseph Retrum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 3377-23
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.4 times the Medicare Part D claims of the average medical physician assistant in 2024

2,785 Medicare Part D claims for 346 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 121 claims were for opioids.

  1. Nathaniel Retrum2,785
  2. Specialty average1,148

Most prescribed

  1. Atorvastatin Calcium208 claims
  2. Lisinopril100 claims
  3. Rosuvastatin Calcium92 claims
  4. Metoprolol Succinate87 claims
  5. Amlodipine Besylate86 claims
  6. Tamsulosin Hcl85 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 77 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score90.5
  2. Costout of 100 · 30%25.2
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Langlade Hospital - Hotel Dieu OF St Joseph OF Antigo WisconsinAntigo, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Nathaniel Joseph Retrum among 687 medical physician assistant records in Wisconsin

Nathaniel Joseph Retrum, PA-C is one of 687 medical physician assistant records with a practice address in Wisconsin. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 49% of them.

  • NPI issued2014 · 49% of these records are older, 47% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2014 · median 2016 among the 479 with a school on file
  • Record last updated2014 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2 medical physician assistant records list a practice address in Antigo

They are 2 of the 180 NPPES records with a practice address in Antigo, and 687 medical physician assistant records in Wisconsin.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Christy Mattern, PA-CAntigo, WI 544091396445631
  2. Brenda Balthazor, PAWausau, WI 544011851316871
  3. Mollie Berg, PA-CWausau, WI 544011124352604
  4. Kimberly Brown, PA-CWausau, WI 544011053748855
  5. Patrick DrechslerWausau, WI 544011942852504
  6. Lauren Duffy, PAWausau, WI 544011902504087
  7. Aaron Follensbee, PA-CWausau, WI 544011477905909
  8. Sarah Jaeger, PAWausau, WI 544011942225339

Common questions

What is Nathaniel Joseph Retrum, PA-C's NPI number?

Nathaniel Joseph Retrum, PA-C's National Provider Identifier (NPI) is 1336548627, issued on Aug 22, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Nathaniel Joseph Retrum, PA-C located?

The NPPES record lists a practice address at 110 E 5TH Ave, Antigo, WI, 54409. Phone: (715) 623-2351. Providers update this record themselves, so call before visiting.

How can I verify Nathaniel Joseph Retrum, PA-C's license?

NPPES lists Wisconsin license number 3377-23, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Nathaniel Joseph Retrum, PA-C prescribe under Medicare Part D?

In 2024, Nathaniel Joseph Retrum, PA-C had 2,785 Medicare Part D claims for 346 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.

What is Nathaniel Joseph Retrum, PA-C's MIPS final score?

The 2023 MIPS final score is 77 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.